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Client Socket Information


In this section, you will learn how to get client socket information. This is a very simple program of java network. Here, we have used the class named ClientSocketInformation.java that implement the constructor of the Socket class passing two arguments as hostName and TIME_PORT. This program throws an IOException for the exception handling. This exception is thrown to indicate an I/O problem of some sort occurred.

Here, we are going to explore a method to retrieve the host name of the local system in a very simple way. In this way we find out the Local address, Local host information, reuseAddress, and address of the local system in a very simple manner.

Code Description

Here we are going to define about all the using method.

isBound(): This is a boolean type method. This method returns the binding state of the socket.
isConnected():  This method inform about the socket connectivity that is connected from server or may not.
getSoTimeout(): This method  returns the setting for So_TIMEOUT 0 returns implies that the option is disabled.
getSoLinger(): This is the method returns setting for SO_LINGER. -1 returns imply that the option is disabled.

Here is code of this program:
import java.net.*;
import java.io.*;
import java.net.InetAddress;

public class ClientSocketInformation{
  public static final short TIME_PORT = 135;
  public static void main(String[] argsthrows IOException{
    String hostName= null;
      Socket socket= new Socket(hostName,TIME_PORT);
      System.out.println("Socket is =" + socket);
      System.out.println("is socket bound? ="+ socket.isBound());
      System.out.println("is socket Connected? ="+ socket.isConnected());
      System.out.println("show time out = "+ socket.getSoTimeout());
      System.out.println("so linger =" + socket.getSoLinger());
      System.out.println("TCP no Delay =" + socket.getTcpNoDelay());
      System.out.println("Traffic class =" + socket.getTrafficClass());
      System.out.println("channel is =" + socket.getChannel());
      System.out.println("Reuse address is =" + socket.getReuseAddress());
      System.out.println("close =" + socket.isClosed());
      InetAddress in= socket.getInetAddress();
      System.out.print("RAW IP Address - (byte[]) : ");
      byte[] b1 = in.getAddress();
      for (int i=0; i< b1.length; i++) {
        if (i > 0) {
      System.out.println("Is Loopback Address?      : " + in.isLoopbackAddress());
      System.out.println("Is Multicast Address?     : " + in.isMulticastAddress());
      InetAddress address = socket.getLocalAddress();
      System.out.println("Local address =" + address);
    catch (UnknownHostException  e)  {
    catch (IOException e) {

Here Output of this  program:

C:\amar>javac ClientSocketInformation.java
C:\amar>java ClientSocketInformation

Socket is =Socket[addr=localhost/,port=135,localport=1329]
is socket bound? =true
is socket Connected? =true
show time out = 0
so linger =-1
TCP no Delay =false
Traffic class =0
channel is =null
Reuse address is =false
close =false

RAW IP Address - (byte[]) :
Is Loopback Address? : true
Is Multicast Address? : false

Local address =/



Download of this program.



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